Unlock instant, AI-driven research and patent intelligence for your innovation.
Method for determining mine single-row curtain-grouting hole distance
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A curtain grouting and determination method technology, applied in construction, sheet pile wall, foundation structure engineering and other directions, can solve the problems of capital investment, increase project investment, lack of determination method, etc., to save investment cost, shorten construction period, improve economic effect
Inactive Publication Date: 2011-06-29
HEBEI IRON & STEEL GRP MINING +2
View PDF0 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Since the curtain grouting process and technology are still in the stage of perfection and improvement, there is still no scientific and accurate determination method for the hole distance of the grouting holes, and whether the hole distance of the grouting holes is reasonable will directly affect the water blocking effect of the curtain grouting or the curtain grouting effect. Grouting project investment
Too large curtain grouting hole spacing will seriously affect the water blocking effect, and too small curtain grouting hole spacing will increase project investment and cause unnecessary capital investment
For a long time, the distance between grouting holes in curtain engineering has been determined to be 10m by convention and experience, and there is no detailed demonstration of the theoretical basis and practical effect of the 10m hole distance
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0031] 2. Construction inspection holes to obtain curtain permeability: drill 2 construction inspection holes, test parameters and permeability q 0 The values are as follows:
[0032] Hole number
Radius R(m)
test section
Seepage Q(L)
Segment length L(m)
Pressure P(mpa)
time t(min)
Permeability q 0 (Lu)
J1
9
D1
1433.45
112
3.30
20
0.194
D2
2298.16
149
3.27
25
0.189
D3
1184.32
90
3.81
18
0.192
J2
11
D1
4640.20
120
3.45
22
0.509
D2
3040.11
131
3.64
16
0.398
D3
1800.83
102
3.81
15
0.309
[0033] 3. J1 meets the curtain quality requirements, both q 0 ≤0.2Lu, determine the effective diffusion radius of slurry R=9m.
[0034] 4. The same horizontal grouting point distance D 0 :
[...
Embodiment 2
[0041] The grouting material is 425 Portland cement, and the penetration ratio J 0 =60, T=H / J0=280 / 60=4.67m.
[0042] 2. Obtain the curtain permeability from the construction inspection hole. 2 construction inspection holes, test parameters and permeability q 0 The values are as follows:
[0043]
[0044] 3. Both J1 and J2 meet the curtain quality requirements, both q 0≤0.2Lu, in order to save investment, the effective diffusion radius of the slurry is determined to be R=9m.
[0045] 4. The same horizontal grouting point distance D 0 :
[0046] D 0 = 2 R 2 - ( T 2 ) 2 = 17.38 m
[0047] 5. The maximum depth of the test hole of the north curtain line is 460m, the hole deviation rate is 0.5%, and the hole devi...
Embodiment 3
[0052] 2. Construction inspection holes to obtain curtain permeability: 3 construction inspection holes, test parameters and permeability q 0 The values are as follows:
[0053] Hole number
[0054] 3. J3 meets the curtain quality requirements, both q 0 ≤0.2Lu, determine the effective diffusion radius of slurry R=8m.
[0055] 4. The same horizontal grouting point distance D 0 :
[0056] D 0 = 2 R 2 - ( T 2 ) 2 = 15.08 m
[0057] 5. The maximum hole depth of the Northeast curtain line test hole is 510m, the hole deviation rate is 0.5%, and the hole deviation distance: d=2.55m.
[0059] From this, it is determined that the drilling distance...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention relates to a method for determining a mine single-row curtain-grouting hole distance, which belongs to the technical field of mining and is used for solving the problems in reasonably determining the curtain-grouting hole distance. The method comprises the following steps: a, determining the thickness T of the curtain; b, determining the permeability q0 of the curtain wall; c, determining the active diffusion radius R of the grout; d, determining the distance D0 between every two grouting points on the same level; and e, determining and calculating the grouting hole distance D. The invention breaks through the construction convention that the grouting hole distance in the curtain engineering is 10m, combines the various parameters of curtain grouting, and adopts an experiment and theory combination method to determine the reasonable grouting hole distance for curtain grouting, thereby achieving the best grouting water-plugging effect with reasonable engineering investment. The experiment indicates that when the grouting is carried out according to the hole distance determined by the method, the water permeability of the inspection holes can meet the requirements and is qualified on quality detection. The invention ensures the effect of the curtain, saves the investment cost, shortens the construction period and has favorable economic benefit.
Description
technical field [0001] The invention relates to a mine curtain grouting engineering technology, in particular to a method for determining the distance between curtain grouting and drilling holes for a single row of holes in a mine, which belongs to the technical field of mining. Background technique [0002] Curtain grouting refers to a method of water prevention and control that uses grouting to construct a waterproof curtain on the mine water inlet channel to cut off groundwater. The use of curtain grouting to prevent and control mine groundwater can not only improve the economic benefits of enterprises, protect the hydrogeological environment of mining areas, but also eliminate hidden safety hazards in Dashui mines. At present, this technology is gradually adopted by Dashui mines. Since the curtain grouting process and technology are still in the stage of perfection and improvement, there is still no scientific and accurate determination method for the hole distance of th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More